stewart



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-W. HLS'TEWART 8?; E. J. CHAPMAN.

DRILL HOLE CLEANER.

No; 257,779. Patented M 9. I882.

J; Q E314 j v v 4 I IL INVE TOR: fif/V BY W? ATTORNEYS.

n. PETERS. Phnlo-Llllmgmphcr. Washingtan. a a,

Y UNITED STATES PATENT 'O'FFIcE.

WILLIAM.H. STEWART AND EMERY J. CHAPMAN, OF DENVER, COL.

DRILL-HOLE CLEANER.

SPECIFICATION forming part of Letters Patent.- No. 257,779, dated May 9, 1882.

Application filed January 30, 1882. (Model. i

To all whom it may concern:

Be it known that we, WILLIAM HARISON STEWART and EMERY JONATHAN CHAPMAN, both of Denver, in the county of Arapahoe and State of Colorado, have invented a new and useful Improvement in Drill-Hole Oleaners', of which the following is a full, clear, and exact description;

The object of our invention is to facilitate removing the sediment from the bottom of drillholes. The invention consists in a tube provided atits lower end with a series of sediment-recelvlng cups, and connected with an air-compressor, whereby when the tube is passed into the drill-hole the compressed air or water issuin g'from the bottom of the tube forces the sediment upward, which sediment, when dropping back again, falls into the cups, which can be emptied when the tube is withdrawn from the drill-hole.

The invention further consists in making the sediment-cups adjustable on the tube,and in providing the tube at its lower end with side apertures or recesses for the escape of the compressed air.

The invention further consists in details of construction, as will be fully described hereinafter.

Reference is to be had to the accompanying drawings, formin gapart of this specificatiomin w hich similar letters of reference indicate cor- ,responding parts in both the figures.

Figure 1 is a longitudinal elevation of our improved drill-hole cleaner, showing the manner in which it is used. Fig. 2 isa longitudinal sectional elevation of the air-compressor used with our improved drill-hole cleaner.

. The cylinder A is provided in its bottom B with an opening, B, which is closed by an upwardly-swinging valve, O, of the ordinary constructiou.

The cylinder contains a piston, D, attached to a piston-rod, E, passing through the top or 5 cover of the cylinder, which rod is provided at its upper end with a loop or handle, E.

The edges of the piston D are covered with a packing-strip, F, of leather or rubber, which strip projects below the bottom of the piston,

, so that when the piston is pushed downward the air that is compressed by the piston will press the projecting parts of the strip F against the inner surface of the cylinder, and thereby form a close and tight joint and prevent the air from passing between the inner surface of the cylinderand the edge of the piston.

A tubular arm, G,.projects from near the The upper end of the arm Gis connected by i a flexible tube, J, with the upper end of the excavating-tube K, which extends down into the drill-hole, to or nearly to the bottom of the same.

The lower end of the excavating-tube K is provided with a series of notches or recesses, a, forming side apertures in the tube.

The tube K is 'externally screw-threaded from the lower end upward a certain distance, and a series of cups, L, one above the other, and separated by certain distances, are secured on this threaded part of the tube.

Any desired number of cups, from one to twelve or more, can be attached to the tube, and the distancethey are placed apart may be varied. Thecupsarepreferablyfunnel-shaped, but may have any suitable shape, and they may be secured to the tube in any suitable manner.

The cylinder A is provided at its lower end with a stirrup, M, adapted to receive the foot of the operator forthe purpose of holding the cylinder firmly in position.

We do not limit ourselves to the special construction herein described of the air compressing apparatus, but may modify the same as circumstances may require.

The operation is as follows: The excavating-tube K is placed in the drill-hole, as shown, and the piston D is operated by means of the handle, whereby the air will be compressed in the cylinder A. The compressed air is forced through the tubular arm G and the tubes J and K, and esca pes through the lower end and sideopenings,a,ofthetubeK. The compressed air strikes against the sediment or pulverized rock at the bottom of the drill-hole and carries the sediment upward. The sediment falls back again and the greater part of the same drops into the cups L L. When the cups are filled the tube K is withdrawn and the cups are emptied. This operation is repeated until all the sediment or pulverized rock is removed from the drill-hole.

This drill-hole cleaner operates as well under water as in a dry drill-hole.

" Having'thus described our invention, we claim as new and desire to secure by Letters Patent-- 1. In a drill-hole cleaner, the combination, with the tube K, carrying one or more sediment-cups, L, at its lower end, of an air-compressor, A D, substantially as herein shown and described, and for the purpose set forth.

2. In a drill-hole cleaner, the combination, with the tube K, of one or more adjustable sediment-cups mounted on its lower end, and' of an air-compressor, A D, substantially as herein shown and described, and for the purpo'seset forth.

3. In a drill-hole cleaner, the combination, withthe tube K, havingits lower end threaded, of one or more sediment-cups, L, screwed on this threaded part of the tube, and of an aircompressor, AD, substantially as herein shown and described, and for the purpose set forth.

4. In a drill-hole cleaner, the combination, with the tube K, provided at its lower end with a series of notches or recesses, a, of the sediment-cups L, mounted on the tube K, and of an air-compressor, A D, substantially as herein shown and described, and for the purpose set forth.

5. In a drill-hole cleaner, the combination, with the tube ,K, of the sediment-cups L, mounted on the lower end of the same, and ot the air-compressor A D, provided at its lower end with a stirrup, M, substantially as herein shown and described, and for the purpose set forth Witnesses:

- S. VINSON FARNUM,

WILLIAM GERLACH. 

